Phthora nenano (Medieval Greek: φθορά νενανῶ, also νενανὼ) is the name of one of the two "extra" modes in the Byzantine Octoechos—an eight mode system, which was created during reforms of the Monastery Agios Sabas, near Jerusalem, and the Stoudiou-Monastery between the seventh and the tenth century.

We use cookies to enhance your experience and to develop the site further. We never track you for monetary reasons. If you do not want this, you can either use the Do-Not-Track feature of your browser or opt out explicitly.